Objectives: To describe a unique case of acute vertigo presenting with spontaneous horizontal nystagmus (SHN) and a clinical picture consistent with right acute peripheral vestibular loss (APVL) in which an isolated hypofunction of a horizontal semicircular canal (HSC) permitted to detect a spontaneous canalith jam and treat the patient accordingly. Methods: Case report and literature review. Results: A 74-year old woman presented with acute vertigo, left-beating SHN and a clinical picture consistent with right APVL. Nevertheless, vestibular evoked myogenic potentials were normal with symmetrical amplitudes and the video head impulse test (vHIT) revealed an isolated hypofunction of the right HSC. After repeated head shakings, the supine roll test evoked bilaterally a positioning paroxysmal geotropic horizontal nystagmus suggesting benign paroxysmal positional vertigo involving the non-ampullated arm of the right HSC. vHIT and caloric testing confirmed restitution of HSC function after repositioning maneuvers. Conclusions: In case of acute vertigo with SHN, a complete functional assessment of vestibular receptors and afferents should always be given in order to avoid misdiagnosis. Canalith jam should be considered in case of spontaneous nystagmus and isolated canal hypofunction.

Castellucci, A., Malara, P., Brandolini, C., Del Vecchio, V., Giordano, D., Ghidini, A., et al. (2019). Isolated horizontal canal hypofunction differentiating a canalith jam from an acute peripheral vestibular loss. AMERICAN JOURNAL OF OTOLARYNGOLOGY, 40(2), 319-322 [10.1016/j.amjoto.2018.12.005].

Isolated horizontal canal hypofunction differentiating a canalith jam from an acute peripheral vestibular loss

Castellucci, Andrea;Brandolini, Cristina;Giordano, Davide;Ferri, Gian Gaetano;Pirodda, Antonio
2019

Abstract

Objectives: To describe a unique case of acute vertigo presenting with spontaneous horizontal nystagmus (SHN) and a clinical picture consistent with right acute peripheral vestibular loss (APVL) in which an isolated hypofunction of a horizontal semicircular canal (HSC) permitted to detect a spontaneous canalith jam and treat the patient accordingly. Methods: Case report and literature review. Results: A 74-year old woman presented with acute vertigo, left-beating SHN and a clinical picture consistent with right APVL. Nevertheless, vestibular evoked myogenic potentials were normal with symmetrical amplitudes and the video head impulse test (vHIT) revealed an isolated hypofunction of the right HSC. After repeated head shakings, the supine roll test evoked bilaterally a positioning paroxysmal geotropic horizontal nystagmus suggesting benign paroxysmal positional vertigo involving the non-ampullated arm of the right HSC. vHIT and caloric testing confirmed restitution of HSC function after repositioning maneuvers. Conclusions: In case of acute vertigo with SHN, a complete functional assessment of vestibular receptors and afferents should always be given in order to avoid misdiagnosis. Canalith jam should be considered in case of spontaneous nystagmus and isolated canal hypofunction.
2019
Castellucci, A., Malara, P., Brandolini, C., Del Vecchio, V., Giordano, D., Ghidini, A., et al. (2019). Isolated horizontal canal hypofunction differentiating a canalith jam from an acute peripheral vestibular loss. AMERICAN JOURNAL OF OTOLARYNGOLOGY, 40(2), 319-322 [10.1016/j.amjoto.2018.12.005].
Castellucci, Andrea; Malara, Pasquale; Brandolini, Cristina; Del Vecchio, Valeria; Giordano, Davide; Ghidini, Angelo; Ferri, Gian Gaetano*; Pirodda, A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/682323
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